package com.zhangst.bbs.util;

import java.security.MessageDigest;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class GenericUtil {
	public final static String MD5(String s) {
		s+="#@!zhangst";
		char hexDigits[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
				'A', 'B', 'C', 'D', 'E', 'F' };
		try {
			byte[] btInput = s.getBytes();
			// 获得MD5摘要算法的 MessageDigest 对象
			MessageDigest mdInst = MessageDigest.getInstance("MD5");
			// 使用指定的字节更新摘要
			mdInst.update(btInput);
			// 获得密文
			byte[] md = mdInst.digest();
			// 把密文转换成十六进制的字符串形式
			int j = md.length;
			char str[] = new char[j * 2];
			int k = 0;
			for (int i = 0; i < j; i++) {
				byte byte0 = md[i];
				str[k++] = hexDigits[byte0 >>> 4 & 0xf];
				str[k++] = hexDigits[byte0 & 0xf];
			}
			return new String(str);
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}
	
	
	public static Timestamp stringToTimestamp(String dateStr){
		 
		   SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		   Calendar cal = Calendar.getInstance();
		   try {
		    Date date = sdf.parse(dateStr);
		    date.getTime();
		    cal.setTime(date);
		    return new Timestamp(cal.getTimeInMillis());
		   } catch (ParseException e) {
		    e.printStackTrace();
		   }
		 
		   cal.setTime(new Date());
		   return new Timestamp(cal.getTimeInMillis());
		}
}